Apparatus

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sensors Mode-S transponder

4401D1

ICAO 24-bit transponder address · allocated to Austria

Currently assigned to OE-IND · AIRBUS A-320

Hex
4401D1
Octal
21000721
Decimal
4,456,913
Country
AT
Tail
OE-IND
Type
A320
No current signal · last broadcast Jul 26, 21:40 UTC
Flights observed
578
Distinct callsigns
20
Country
AT
Last broadcast
Jul 26, 21:40 UTC

Last known position

Most recent position reported by Mode-S 4401D1.

Country allocation

The ICAO 24-bit address 4401D1 falls within the block assigned to Austria (AT) by ICAO Annex 10, Volume III. Every aircraft registered in Austria receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 20 distinct

Callsign Airline Flights Last seen
EJU42HR - 10 2026-05-24
EJU39WK - 10 2026-05-24
EJU37UW - 7 2026-05-24
EJU61EM - 6 2026-05-24
EJU32EY easyJet Europe 6 2026-07-23
EJU92FL easyJet Europe 5 2026-05-18
EJU72CD easyJet Europe 5 2026-05-18
EJU65NU easyJet Europe 5 2026-07-23
EJU62PT easyJet Europe 5 2026-05-18
EJU629M - 5 2026-06-19
EJU12AZ easyJet Europe 5 2026-05-18
EJU93PD easyJet Europe 4 2026-05-21
EJU86XD easyJet Europe 4 2026-05-20
EJU75FW easyJet Europe 4 2026-06-08
EJU69JX easyJet Europe 4 2026-04-21
EJU695G - 4 2026-06-24
EJU65DQ - 4 2026-06-21
EJU59TE easyJet Europe 4 2026-05-18
EJU59GF easyJet Europe 4 2026-05-18
EJU329N easyJet Europe 4 2026-06-22

Recent flights last 50

DateFlightRouteTakeoffLandingDuration
2026-07-26 EJU123Z NCE → LIL Jul 26, 20:20 UTCJul 26, 21:40 UTC1h 20m
2026-07-26 EJU123Z NCE → LIL Jul 26, 18:05 UTCJul 26, 18:40 UTC35m
2026-07-26 EJU49NU - Jul 26, 15:50 UTCJul 26, 16:30 UTC40m
2026-07-26 EJU37KY PMO → NCE Jul 26, 12:50 UTCJul 26, 14:00 UTC1h 10m
2026-07-26 EJU39EW NCE → PMO Jul 26, 10:20 UTCJul 26, 11:30 UTC1h 10m
2026-07-26 EJU46XB NAP → NCE Jul 26, 08:20 UTCJul 26, 09:25 UTC1h 5m
2026-07-26 EJU1689 NCE → NAP Jul 26, 05:40 UTCJul 26, 06:35 UTC56m
2026-07-25 EJU48TR JMK → NCE Jul 25, 20:15 UTCJul 25, 22:45 UTC2h 30m
2026-07-25 EJU39LB IBZ → BOD Jul 25, 17:10 UTCJul 25, 19:20 UTC2h 10m
2026-07-25 EJU1710 NCE → PMI Jul 25, 15:10 UTCJul 25, 16:05 UTC55m
2026-07-24 EJU42YB LGW → PMI Jul 24, 21:00 UTCJul 24, 22:50 UTC1h 50m
2026-07-24 EJU64GE PMI → LGW Jul 24, 17:50 UTCJul 24, 19:50 UTC2h 0m
2026-07-24 EJU7278 BSL → PMI Jul 24, 15:05 UTCJul 24, 16:35 UTC1h 30m
2026-07-24 EJU16YN GVA → FAO Jul 24, 12:40 UTCJul 24, 14:10 UTC1h 30m
2026-07-24 EJU53DE LTN → PMI Jul 24, 08:55 UTCJul 24, 10:55 UTC2h 0m
2026-07-24 EJU62GX PMI → LTN Jul 24, 05:20 UTCJul 24, 07:25 UTC2h 5m
2026-07-23 EJU32EY BER → PMI Jul 23, 19:15 UTCJul 23, 21:10 UTC1h 55m
2026-07-23 EJU65NU PMI → BER Jul 23, 15:25 UTCJul 23, 17:55 UTC2h 30m
2026-07-23 EJU48EL OPO → PMI Jul 23, 12:15 UTCJul 23, 13:50 UTC1h 35m
2026-07-23 EJU69YK PMI → OPO Jul 23, 09:40 UTCJul 23, 11:15 UTC1h 35m
2026-07-23 EJU48NC LYS → PMI Jul 23, 07:15 UTCJul 23, 08:25 UTC1h 10m
2026-07-23 EJU67GL ORY → NAP Jul 23, 05:00 UTCJul 23, 06:10 UTC1h 10m
2026-07-22 EJU84TF - Jul 22, 20:35 UTCJul 22, 22:35 UTC2h 0m
2026-07-22 EJU7365 MXP → MAH Jul 22, 17:10 UTCJul 22, 19:10 UTC2h 0m
2026-07-22 EJU38UG BOD → PMI Jul 22, 14:50 UTCJul 22, 15:55 UTC1h 5m
2026-07-22 EJU31EQ PMI → BOD Jul 22, 12:50 UTCJul 22, 13:55 UTC1h 5m
2026-07-22 EJU32EY BER → PMI Jul 22, 11:15 UTCJul 22, 11:40 UTC25m
2026-07-21 EJU17TX BER → PMI Jul 21, 19:10 UTCJul 21, 21:35 UTC2h 25m
2026-07-21 EJU91FL PMI → BER Jul 21, 15:45 UTCJul 21, 18:15 UTC2h 30m
2026-07-21 EJU61AV - Jul 21, 12:30 UTCJul 21, 14:15 UTC1h 45m
2026-07-21 EJU72WM - Jul 21, 09:30 UTCJul 21, 11:35 UTC2h 5m
2026-07-21 EJU19DC GVA → PMI Jul 21, 06:40 UTCJul 21, 08:05 UTC1h 25m
2026-07-21 EJU95GK PMI → GVA Jul 21, 04:25 UTCJul 21, 05:45 UTC1h 20m
2026-07-20 EJU72MK - Jul 20, 22:15 UTCJul 21, 00:20 UTC2h 4m
2026-07-20 EJU13PT - Jul 20, 19:10 UTCJul 20, 21:25 UTC2h 15m
2026-07-20 EJU14DU - Jul 20, 16:55 UTCJul 20, 18:05 UTC1h 10m
2026-07-20 EJU7285 - Jul 20, 13:55 UTCJul 20, 15:15 UTC1h 20m
2026-07-20 EJU38UG BOD → PMI Jul 20, 11:35 UTCJul 20, 12:40 UTC1h 5m
2026-07-20 EJU31EQ PMI → BOD Jul 20, 09:45 UTCJul 20, 10:45 UTC1h 0m
2026-07-20 EJU19DC - Jul 20, 07:20 UTCJul 20, 08:40 UTC1h 20m
2026-07-20 EJU95GK - Jul 20, 05:10 UTCJul 20, 06:20 UTC1h 10m
2026-07-19 EJU42YB - Jul 19, 22:25 UTCJul 20, 00:10 UTC1h 45m
2026-07-19 EJU64GE - Jul 19, 19:05 UTCJul 19, 21:10 UTC2h 5m
2026-07-19 EJU16UP GVA → PMI Jul 19, 16:35 UTCJul 19, 18:00 UTC1h 25m
2026-07-19 EJU93WQ PMI → GVA Jul 19, 14:05 UTCJul 19, 15:35 UTC1h 30m
2026-07-19 EJU32EY BER → PMI Jul 19, 10:10 UTCJul 19, 12:30 UTC2h 20m
2026-07-19 EJU65NU - Jul 19, 06:50 UTCJul 19, 08:55 UTC2h 5m
2026-07-18 EJU15WN - Jul 18, 20:30 UTCJul 18, 22:40 UTC2h 10m
2026-07-18 EJU12DQ - Jul 18, 17:05 UTCJul 18, 19:25 UTC2h 20m
2026-07-18 EJU16UP GVA → PMI Jul 18, 14:25 UTCJul 18, 15:45 UTC1h 20m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the OE-IND page for operator, model, and routing details .

Mode-S 4401D1 frequently asked

What is Mode-S code 4401D1?
4401D1 is an ICAO 24-bit transponder address. Allocated to Austria. Assigned to OE-IND.
Where is Mode-S 4401D1 registered?
Mode-S code 4401D1 is allocated to Austria (AT). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is 4401D1 broadcasting right now?
No active broadcast right now. Last signal was Jul 26, 21:40 UTC.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4401D1, octal 21000721, decimal 4,456,913.
What flights does 4401D1 operate?
Mode-S 4401D1 has broadcast 20 distinct callsigns, including EJU42HR, EJU39WK, EJU37UW, EJU61EM, EJU32EY.